VIP3‑31A‑30(B031SO378) is a three‑phase three‑wire industrial EMI power filter engineered for heavy‑duty industrial AC power supply systems. Built with optimized composite filtering circuitry, it delivers effective suppression on both common‑mode and differential‑mode conducted interference transmitted through power lines. This chassis‑mounted filter adopts premium passive components, featuring solid insulation property and outstanding high‑voltage withstand performance. It improves power supply quality for host devices and reduces noise cross‑interference inside electrical cabinets. Every unit undergoes strict factory inspection to maintain stable filtering capability across a wide working temperature range. As a vital anti‑interference accessory, it facilitates end‑product EMC compliance for industrial equipment manufacturers and system integrators.

This three‑phase power filter is rated for 380/480VAC, with maximum RMS current of 30A at 480VAC and fits 50/60Hz power frequency. The maximum line‑to‑ground leakage current is 2.0mA under 480VAC, 60Hz condition. For one‑minute high‑potential test, line‑to‑ground withstand voltage is 2000VAC while line‑to‑line withstand voltage reaches 1450VDC. Insulation resistance is no less than 100M ohms when measured at 500VDC between input, output terminals and ground. Its operating ambient temperature covers ‑25℃ to +100℃. Tested under 50‑ohm system, it obtains favorable insertion‑loss performance against common‑mode and differential‑mode noise over broad frequency bands.

It eliminates conducted electromagnetic noise existing on three‑phase AC power lines. It blocks grid‑borne interference from invading equipment and prevents internal noise of machinery from feeding back to public power grid. It avoids equipment misoperation and signal disorder triggered by electromagnetic disturbance, optimizes power quality and supports finished‑product EMC compliance certification.

It is widely applied in three‑phase industrial automation facilities, inverter & frequency converter systems, motor drive units, CNC machinery, industrial control cabinets, PLC control systems, high‑power industrial power supplies and production‑line automation equipment with three‑phase power input. It can be adopted for new‑product development as well as anti‑interference upgrading of already‑operational machines.